Hair trimmer housing



FIG. 1 is a top perspective view of the present hair trimmer housing;

FIG. 2 is a left side view of the hair trimmer housing of FIG. 1;

FIG. 3 is a right side view of same;

FIG. 4 is a front view of same;

FIG. 5 is a rear view of the hair trimmer housing of FIG. 1.

FIG. 6 is a top plan view of same; and,

FIG. 7 is a bottom view of the hair trimmer housing of FIG. 1.

The broken lines illustrate portions of the hair trimmer housing and form no part of the claimed design. 

CLAIM The ornamental design for a hair trimmer housing, as shown and described. 